Controlling mechanical response characteristics of a disc drive actuator by adjusting a fastener engaging the actuator shaft to vary axial force on the bearing assembly
US6556387B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2000 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | Jun 20, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5521
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus and method for adjusting an actuator mechanical response characteristic in a data handling system, such as a disc drive. An actuator rotates about a pivot system to move a read/write head adjacent a recording surface, the pivot system comprising a stationary shaft and a bearing asesmbly comprising a stationary inner race coupled to the shaft and a rotatable outer race coupled to the actuator. A fastener is provided to engage the shaft and apply an initial amount of axially directed force on the inner race. A broad spectrum excitation is applied to the actuator and a mechanical response characteristic of the actuator is measured. The fastener is repetitively adjusted to increase the amount of axially directed force until the measured mechanical response characteristic of the actuator reaches a desired level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.